Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7488877 | Violin shoulder rest | David Ki Wai Cheng | 2009-02-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7488877 | Violin shoulder rest | David Ki Wai Cheng | 2009-02-10 |